Homemade Ketchup

1 . Stage

Pour tomatoes into slow cooker. Swirl 1/4 cup water in each emptied can and pour into the slow cooker. Add sugar, vinegar, onion powder, garlic powder, salt, celery salt, mustard powder, black pepper, cayenne pepper, and whole clove; whisk to combine. Dotdash Meredith Food Studios

2 . Stage

Cook on High, uncovered, until mixture is reduced by half and very thick, 10 to 12 hours. Stir every hour or so. Dotdash Meredith Food Studios

3 . Stage

Use an immersion blender for about 20 seconds to smooth the texture of the ketchup. Dotdash Meredith Food Studios

4 . Stage

Ladle ketchup into a fine strainer and press mixture with the back of a ladle to strain out any skins and seeds. Dotdash Meredith Food Studios

5 . Stage

Transfer strained ketchup to a bowl. Cool completely.

6 . Stage

Taste and adjust salt, black pepper, and cayenne pepper as desired. Dotdash Meredith Food Studios